687467 has 4 divisors (see below), whose sum is σ = 749976. Its totient is φ = 624960.

The previous prime is 687461. The next prime is 687473. The reversal of 687467 is 764786.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (687461) and next prime (687473).

It is a cyclic number.

It is not a de Polignac number, because 687467 - 2⁶ = 687403 is a prime.

It is a super-2 number, since 2×687467² = 945221752178, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 687467.

It is not an unprimeable number, because it can be changed into a prime (687461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31238 + ... + 31259.

It is an arithmetic number, because the mean of its divisors is an integer number (187494).

2⁶⁸⁷⁴⁶⁷ is an apocalyptic number.

687467 is a deficient number, since it is larger than the sum of its proper divisors (62509).

687467 is a wasteful number, since it uses less digits than its factorization.

687467 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62508.

The product of its digits is 56448, while the sum is 38.

The square root of 687467 is about 829.1362976013. The cubic root of 687467 is about 88.2572962212.

The spelling of 687467 in words is "six hundred eighty-seven thousand, four hundred sixty-seven".